By 2021, Ford had already halted production of the GT350, making the GT500 the only Mustang to bear the Cobra snake badge. But all those impressive numbers seem not to be enough for some.

From a practical standpoint, the last thing this 2021 Ford Mustang Shelby GT500 needs is more muscle. Its hand-built 5.2-liter ‘Predator’ V8 is already churning out a staggering 760 horsepower ...